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Yes, all bulbs are 400W HPS, two of the new bulbs were Apollo and 2 were iPower, so not premium bulbs but neither was the original generic hps bulb that came with the set. The ballast itself was from LEDwholesaler but does not show a brand or manufacturer.

Hi All, I have been looking extensively online for an answer to my problem but have not been successful. Here is the situation: I have a 400w HPS setup with digital ballast. My old original bulb still works fine (no flickering, half decent light output), but four different replacement bulbs from...